#3737CC#3737CC
#3737CC is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 45.0% C 0.221 H 273.1°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).
Color values
| HEX | #3737CC |
|---|---|
| RGB | rgb(55, 55, 204) |
| HSL | hsl(240, 59%, 51%) |
| HSV | hsv(240, 73%, 80%) |
| CMYK | cmyk(73%, 73%, 0%, 20%) |
| CIE-LAB | lab(33.78, 48.46, -76.22) |
| CIE-LCH | lch(33.78, 90.32, 302.45°) |
| OKLab | oklab(44.97% 0.0118 -0.2205) |
| OKLCH | oklch(44.97% 0.221 273.1) |
| XYZ | xyz(13.8372, 7.9028, 57.9112) |
| Luminance | 0.0790 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue With A Hint Of Purple
#533CC6
ΔE00 3.35
Blurple
#5539CC
ΔE00 3.49
Blue Blue
#2242C7
ΔE00 3.85
Blue (survey)
#0343DF
ΔE00 4.57
Ocean Blue
#4F42B5
ΔE00 4.62
Vibrant Blue
#0339F8
ΔE00 5.12
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3737CC #CCCC37
analogous
#3781CC #3737CC #8137CC
triadic
#3737CC #CC3737 #37CC37
tetradic
#3737CC #CC3781 #CCCC37 #37CC81
square
#3737CC #CC3781 #CCCC37 #37CC81
split-complementary
#3737CC #CC8137 #81CC37
monochromatic
#1C1C6D #28289E #3737CC #6868D8 #9999E5
Accessibility & contrast
On white
8.14
#3737CC on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.58
#3737CC on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3737CC
8.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3737CC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3737CC | 1.00 | 8.14 | 2.58 | 8.14 |
| #FFFFFF | 8.14 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.58 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.14 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0057D0
Deuteranopia (green-blind)
#0048C9
Tritanopia (blue-blind)
#00627E
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #3737cc; /* rgb */ color: rgb(55, 55, 204); /* oklch */ color: oklch(45.0% 0.221 273.1);
Tailwind
colors: {
custom: {
50: '#8470dd',
500: '#3737cc',
950: '#000000',
},
}SCSS
$custom: #3737cc; $custom-light: #8470dd; $custom-dark: #000000;
JSON
{
"hex": "#3737cc",
"rgb": {
"r": 55,
"g": 55,
"b": 204
},
"hsl": {
"h": 240,
"s": 59.363,
"l": 50.784
},
"oklch": {
"l": 0.44969,
"c": 0.22083,
"h": 273.1
},
"luminance": 0.07904
}Semantic roles & 50–950 ramp
primary
#3737CC
secondary
#D0D08E
accent
#E345E3
background
#F9F6FD
surface
#F1ECFB
border
#CBC7D4
text
#0D0715
muted
#7E7A83